Contacts of the strand formed by residues 164 - 167 (chain B) in PDB entry 1ESQ
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with VAL 164 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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118B ALA 3.2 17.7 + - - +
119B ALA* 3.1 11.2 - - + +
120B ILE 2.8 27.7 + - - -
163B THR* 1.3 83.6 + - - +
165B ILE* 1.3 67.1 + - - +
166B ALA* 4.8 0.9 - - + +
174B ILE* 4.1 21.8 - - + -
175B ALA 3.6 9.2 - - - +
176B ASP* 4.1 13.7 - - + -
214B PRO* 3.6 28.0 - - + +
215B LEU* 3.7 17.9 - - - +
218B ALA* 4.4 7.0 - - + -
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Residues in contact with ILE 165 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
120B ILE* 3.7 22.4 - - + +
127B ILE* 4.0 16.2 - - + -
154B ALA* 3.8 19.7 - - - +
157B ALA* 3.6 14.4 - - + +
158B ALA* 3.3 30.7 - - - +
161B LEU* 4.7 4.7 - - + -
163B THR* 3.9 17.5 - - + -
164B VAL* 1.3 79.2 - - - +
166B ALA* 1.3 60.8 + - - +
167B ILE* 3.7 26.0 - - + -
173B VAL 3.8 1.6 - - - +
174B ILE* 3.5 3.1 - - - +
175B ALA 3.0 31.1 + - - +
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Residues in contact with ALA 166 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
119B ALA* 5.8 2.0 - - + -
120B ILE 2.8 15.0 + - - +
121B ARG* 3.3 19.5 - - + +
122B GLY 3.1 23.8 + - - +
127B ILE* 5.6 0.2 - - - -
164B VAL* 4.0 2.6 + - + +
165B ILE* 1.3 72.5 - - - +
167B ILE* 1.3 60.7 + - - +
168B THR* 3.4 4.1 + - - -
173B VAL 3.8 4.3 - - - -
174B ILE* 4.3 12.6 - - + -
204B VAL* 5.9 1.6 - - + -
218B ALA* 4.7 8.3 - - + -
222B ILE* 4.1 20.2 - - + -
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Residues in contact with ILE 167 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
122B GLY 3.2 4.7 - - - +
124B ALA* 3.3 33.0 - - + +
127B ILE* 3.9 14.1 - - + -
150B ILE* 3.8 27.5 - - + +
153B LEU* 3.9 24.0 - - + -
154B ALA* 3.8 28.5 - - + +
165B ILE* 3.7 17.7 - - + -
166B ALA* 1.3 68.8 - - - +
168B THR* 1.3 65.2 + - - +
171B VAL 4.2 2.4 - - - +
172B ASP* 3.9 0.7 - - - -
173B VAL* 3.0 33.7 + - - +
174B ILE* 6.1 0.2 - - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il